1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #ifndef lint
31 static const char copyright[] =
32 "@(#) Copyright (c) 1983, 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
34 #endif
35
36 #if 0
37 #ifndef lint
38 static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93";
39 #endif
40 #endif
41
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
44
45 /* Many bug fixes are from Jim Guyton <guyton@rand-unix> */
46
47 /*
48 * TFTP User Program -- Command Interface.
49 */
50 #include <sys/param.h>
51 #include <sys/types.h>
52 #include <sys/socket.h>
53 #include <sys/sysctl.h>
54 #include <sys/file.h>
55 #include <sys/stat.h>
56
57 #include <netinet/in.h>
58 #include <arpa/inet.h>
59 #include <arpa/tftp.h>
60
61 #include <ctype.h>
62 #include <err.h>
63 #include <histedit.h>
64 #include <netdb.h>
65 #include <setjmp.h>
66 #include <signal.h>
67 #include <stdio.h>
68 #include <stdlib.h>
69 #include <string.h>
70 #include <unistd.h>
71
72 #include "tftp-utils.h"
73 #include "tftp-io.h"
74 #include "tftp-options.h"
75 #include "tftp.h"
76
77 #define MAXLINE (2 * MAXPATHLEN)
78 #define TIMEOUT 5 /* secs between rexmt's */
79
80 typedef struct sockaddr_storage peeraddr;
81 static int connected;
82 static char mode[32];
83 static jmp_buf toplevel;
84 volatile int txrx_error;
85 static int peer;
86
87 #define MAX_MARGV 20
88 static int margc;
89 static char *margv[MAX_MARGV];
90
91 int verbose;
92 static char *port = NULL;
93
94 static void get(int, char **);
95 static void help(int, char **);
96 static void intr(int);
97 static void modecmd(int, char **);
98 static void put(int, char **);
99 static void quit(int, char **);
100 static void setascii(int, char **);
101 static void setbinary(int, char **);
102 static void setpeer0(char *, const char *);
103 static void setpeer(int, char **);
104 static void settimeoutpacket(int, char **);
105 static void settimeoutnetwork(int, char **);
106 static void setdebug(int, char **);
107 static void setverbose(int, char **);
108 static void showstatus(int, char **);
109 static void setblocksize(int, char **);
110 static void setblocksize2(int, char **);
111 static void setoptions(int, char **);
112 static void setrollover(int, char **);
113 static void setpacketdrop(int, char **);
114
115 static void command(void) __dead2;
116 static const char *command_prompt(void);
117
118 static void urihandling(char *URI);
119 static void getusage(char *);
120 static void makeargv(char *line);
121 static void putusage(char *);
122 static void settftpmode(const char *);
123
124 static char *tail(char *);
125 static struct cmd *getcmd(char *);
126
127 #define HELPINDENT (sizeof("connect"))
128
129 struct cmd {
130 const char *name;
131 void (*handler)(int, char **);
132 const char *help;
133 };
134
135 static struct cmd cmdtab[] = {
136 { "connect", setpeer, "connect to remote tftp" },
137 { "mode", modecmd, "set file transfer mode" },
138 { "put", put, "send file" },
139 { "get", get, "receive file" },
140 { "quit", quit, "exit tftp" },
141 { "verbose", setverbose, "toggle verbose mode" },
142 { "status", showstatus, "show current status" },
143 { "binary", setbinary, "set mode to octet" },
144 { "ascii", setascii, "set mode to netascii" },
145 { "rexmt", settimeoutpacket,
146 "set per-packet retransmission timeout[-]" },
147 { "timeout", settimeoutnetwork,
148 "set total retransmission timeout" },
149 { "trace", setdebug, "enable 'debug packet'[-]" },
150 { "debug", setdebug, "enable verbose output" },
151 { "blocksize", setblocksize, "set blocksize[*]" },
152 { "blocksize2", setblocksize2, "set blocksize as a power of 2[**]" },
153 { "rollover", setrollover, "rollover after 64K packets[**]" },
154 { "options", setoptions,
155 "enable or disable RFC2347 style options" },
156 { "help", help, "print help information" },
157 { "packetdrop", setpacketdrop, "artificial packetloss feature" },
158 { "?", help, "print help information" },
159 { NULL, NULL, NULL }
160 };
161
162 static struct modes {
163 const char *m_name;
164 const char *m_mode;
165 } modes[] = {
166 { "ascii", "netascii" },
167 { "netascii", "netascii" },
168 { "binary", "octet" },
169 { "image", "octet" },
170 { "octet", "octet" },
171 { NULL, NULL }
172 };
173
174 int
main(int argc,char * argv[])175 main(int argc, char *argv[])
176 {
177
178 acting_as_client = 1;
179 peer = -1;
180 strcpy(mode, "netascii");
181 signal(SIGINT, intr);
182 if (argc > 1) {
183 if (setjmp(toplevel) != 0)
184 exit(txrx_error);
185
186 if (strncmp(argv[1], "tftp://", 7) == 0) {
187 urihandling(argv[1]);
188 exit(txrx_error);
189 }
190
191 setpeer(argc, argv);
192 }
193 if (setjmp(toplevel) != 0)
194 (void)putchar('\n');
195
196 init_options();
197 command();
198 }
199
200 /*
201 * RFC3617 handling of TFTP URIs:
202 *
203 * tftpURI = "tftp://" host "/" file [ mode ]
204 * mode = ";" "mode=" ( "netascii" / "octet" )
205 * file = *( unreserved / escaped )
206 * host = <as specified by RFC 2732>
207 * unreserved = <as specified in RFC 2396>
208 * escaped = <as specified in RFC 2396>
209 *
210 * We are cheating a little bit by allowing any mode as specified in the
211 * modes table defined earlier on in this file and mapping it on the real
212 * mode.
213 */
214 static void
urihandling(char * URI)215 urihandling(char *URI)
216 {
217 char uri[ARG_MAX];
218 char *host = NULL;
219 char *path = NULL;
220 char *opts = NULL;
221 const char *tmode = "octet";
222 char *s;
223 char line[MAXLINE];
224 int i;
225
226 strlcpy(uri, URI, ARG_MAX);
227 host = uri + 7;
228
229 if ((s = strchr(host, '/')) == NULL) {
230 fprintf(stderr,
231 "Invalid URI: Couldn't find / after hostname\n");
232 exit(1);
233 }
234 *s = '\0';
235 path = s + 1;
236
237 if ((s = strchr(path, ';')) != NULL) {
238 *s = '\0';
239 opts = s + 1;
240
241 if (strncmp(opts, "mode=", 5) == 0) {
242 tmode = opts;
243 tmode += 5;
244
245 for (i = 0; modes[i].m_name != NULL; i++) {
246 if (strcmp(modes[i].m_name, tmode) == 0)
247 break;
248 }
249 if (modes[i].m_name == NULL) {
250 fprintf(stderr, "Invalid mode: '%s'\n", mode);
251 exit(1);
252 }
253 settftpmode(modes[i].m_mode);
254 }
255 } else {
256 settftpmode("octet");
257 }
258
259 setpeer0(host, NULL);
260
261 sprintf(line, "get %s", path);
262 makeargv(line);
263 get(margc, margv);
264 }
265
266 static char hostname[MAXHOSTNAMELEN];
267
268 static void
setpeer0(char * host,const char * lport)269 setpeer0(char *host, const char *lport)
270 {
271 struct addrinfo hints, *res0, *res;
272 int error;
273 const char *cause = "unknown";
274
275 if (connected) {
276 close(peer);
277 peer = -1;
278 }
279 connected = 0;
280
281 memset(&hints, 0, sizeof(hints));
282 hints.ai_family = PF_UNSPEC;
283 hints.ai_socktype = SOCK_DGRAM;
284 hints.ai_protocol = IPPROTO_UDP;
285 hints.ai_flags = AI_CANONNAME;
286 if (!lport)
287 lport = "tftp";
288 error = getaddrinfo(host, lport, &hints, &res0);
289 if (error) {
290 warnx("%s", gai_strerror(error));
291 return;
292 }
293
294 for (res = res0; res; res = res->ai_next) {
295 if (res->ai_addrlen > sizeof(peeraddr))
296 continue;
297 peer = socket(res->ai_family, res->ai_socktype,
298 res->ai_protocol);
299 if (peer < 0) {
300 cause = "socket";
301 continue;
302 }
303
304 memset(&peer_sock, 0, sizeof(peer_sock));
305 peer_sock.ss_family = res->ai_family;
306 peer_sock.ss_len = res->ai_addrlen;
307 if (bind(peer, (struct sockaddr *)&peer_sock, peer_sock.ss_len) < 0) {
308 cause = "bind";
309 close(peer);
310 peer = -1;
311 continue;
312 }
313
314 break;
315 }
316
317 if (peer < 0)
318 warn("%s", cause);
319 else {
320 /* res->ai_addr <= sizeof(peeraddr) is guaranteed */
321 memcpy(&peer_sock, res->ai_addr, res->ai_addrlen);
322 if (res->ai_canonname) {
323 (void) strlcpy(hostname, res->ai_canonname,
324 sizeof(hostname));
325 } else
326 (void) strlcpy(hostname, host, sizeof(hostname));
327 connected = 1;
328 }
329
330 freeaddrinfo(res0);
331 }
332
333 static void
setpeer(int argc,char * argv[])334 setpeer(int argc, char *argv[])
335 {
336 char line[MAXLINE];
337
338 if (argc < 2) {
339 strcpy(line, "Connect ");
340 printf("(to) ");
341 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
342 makeargv(line);
343 argc = margc;
344 argv = margv;
345 }
346 if ((argc < 2) || (argc > 3)) {
347 printf("usage: %s [host [port]]\n", argv[0]);
348 return;
349 }
350 if (argc == 3) {
351 port = argv[2];
352 setpeer0(argv[1], argv[2]);
353 } else
354 setpeer0(argv[1], NULL);
355 }
356
357 static void
modecmd(int argc,char * argv[])358 modecmd(int argc, char *argv[])
359 {
360 struct modes *p;
361 const char *sep;
362
363 if (argc < 2) {
364 printf("Using %s mode to transfer files.\n", mode);
365 return;
366 }
367 if (argc == 2) {
368 for (p = modes; p->m_name; p++)
369 if (strcmp(argv[1], p->m_name) == 0)
370 break;
371 if (p->m_name) {
372 settftpmode(p->m_mode);
373 return;
374 }
375 printf("%s: unknown mode\n", argv[1]);
376 /* drop through and print usage message */
377 }
378
379 printf("usage: %s [", argv[0]);
380 sep = " ";
381 for (p = modes; p->m_name != NULL; p++) {
382 printf("%s%s", sep, p->m_name);
383 if (*sep == ' ')
384 sep = " | ";
385 }
386 printf(" ]\n");
387 return;
388 }
389
390 static void
setbinary(int argc __unused,char * argv[]__unused)391 setbinary(int argc __unused, char *argv[] __unused)
392 {
393
394 settftpmode("octet");
395 }
396
397 static void
setascii(int argc __unused,char * argv[]__unused)398 setascii(int argc __unused, char *argv[] __unused)
399 {
400
401 settftpmode("netascii");
402 }
403
404 static void
settftpmode(const char * newmode)405 settftpmode(const char *newmode)
406 {
407
408 strcpy(mode, newmode);
409 if (verbose)
410 printf("mode set to %s\n", mode);
411 }
412
413
414 /*
415 * Send file(s).
416 */
417 static void
put(int argc,char * argv[])418 put(int argc, char *argv[])
419 {
420 int fd;
421 int n;
422 char *cp, *targ;
423 char line[MAXLINE];
424 struct stat sb;
425
426 if (argc < 2) {
427 strcpy(line, "send ");
428 printf("(file) ");
429 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
430 makeargv(line);
431 argc = margc;
432 argv = margv;
433 }
434 if (argc < 2) {
435 putusage(argv[0]);
436 return;
437 }
438 targ = argv[argc - 1];
439 if (strrchr(argv[argc - 1], ':')) {
440 char *lcp;
441
442 for (n = 1; n < argc - 1; n++)
443 if (strchr(argv[n], ':')) {
444 putusage(argv[0]);
445 return;
446 }
447 lcp = argv[argc - 1];
448 targ = strrchr(lcp, ':');
449 *targ++ = 0;
450 if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') {
451 lcp[strlen(lcp) - 1] = '\0';
452 lcp++;
453 }
454 setpeer0(lcp, NULL);
455 }
456 if (!connected) {
457 printf("No target machine specified.\n");
458 return;
459 }
460 if (argc < 4) {
461 cp = argc == 2 ? tail(targ) : argv[1];
462 fd = open(cp, O_RDONLY);
463 if (fd < 0) {
464 warn("%s", cp);
465 return;
466 }
467
468 stat(cp, &sb);
469 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size);
470
471 if (verbose)
472 printf("putting %s to %s:%s [%s]\n",
473 cp, hostname, targ, mode);
474 xmitfile(peer, port, fd, targ, mode);
475 return;
476 }
477 /* this assumes the target is a directory */
478 /* on a remote unix system. hmmmm. */
479 cp = strchr(targ, '\0');
480 *cp++ = '/';
481 for (n = 1; n < argc - 1; n++) {
482 strcpy(cp, tail(argv[n]));
483 fd = open(argv[n], O_RDONLY);
484 if (fd < 0) {
485 warn("%s", argv[n]);
486 continue;
487 }
488
489 stat(cp, &sb);
490 asprintf(&options[OPT_TSIZE].o_request, "%ju", sb.st_size);
491
492 if (verbose)
493 printf("putting %s to %s:%s [%s]\n",
494 argv[n], hostname, targ, mode);
495 xmitfile(peer, port, fd, targ, mode);
496 }
497 }
498
499 static void
putusage(char * s)500 putusage(char *s)
501 {
502
503 printf("usage: %s file [remotename]\n", s);
504 printf(" %s file host:remotename\n", s);
505 printf(" %s file1 file2 ... fileN [[host:]remote-directory]\n", s);
506 }
507
508 /*
509 * Receive file(s).
510 */
511 static void
get(int argc,char * argv[])512 get(int argc, char *argv[])
513 {
514 int fd;
515 int n;
516 char *cp;
517 char *src;
518 char line[MAXLINE];
519
520 if (argc < 2) {
521 strcpy(line, "get ");
522 printf("(files) ");
523 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
524 makeargv(line);
525 argc = margc;
526 argv = margv;
527 }
528 if (argc < 2) {
529 getusage(argv[0]);
530 return;
531 }
532 if (!connected) {
533 for (n = 1; n < argc ; n++)
534 if (strrchr(argv[n], ':') == 0) {
535 printf("No remote host specified and "
536 "no host given for file '%s'\n", argv[n]);
537 getusage(argv[0]);
538 return;
539 }
540 }
541 for (n = 1; n < argc ; n++) {
542 src = strrchr(argv[n], ':');
543 if (src == NULL)
544 src = argv[n];
545 else {
546 char *lcp;
547
548 *src++ = 0;
549 lcp = argv[n];
550 if (lcp[0] == '[' && lcp[strlen(lcp) - 1] == ']') {
551 lcp[strlen(lcp) - 1] = '\0';
552 lcp++;
553 }
554 setpeer0(lcp, NULL);
555 if (!connected)
556 continue;
557 }
558 if (argc < 4) {
559 cp = argc == 3 ? argv[2] : tail(src);
560 fd = creat(cp, 0644);
561 if (fd < 0) {
562 warn("%s", cp);
563 return;
564 }
565 if (verbose)
566 printf("getting from %s:%s to %s [%s]\n",
567 hostname, src, cp, mode);
568 recvfile(peer, port, fd, src, mode);
569 break;
570 }
571 cp = tail(src); /* new .. jdg */
572 fd = creat(cp, 0644);
573 if (fd < 0) {
574 warn("%s", cp);
575 continue;
576 }
577 if (verbose)
578 printf("getting from %s:%s to %s [%s]\n",
579 hostname, src, cp, mode);
580 recvfile(peer, port, fd, src, mode);
581 }
582 }
583
584 static void
getusage(char * s)585 getusage(char *s)
586 {
587
588 printf("usage: %s file [localname]\n", s);
589 printf(" %s [host:]file [localname]\n", s);
590 printf(" %s [host1:]file1 [host2:]file2 ... [hostN:]fileN\n", s);
591 }
592
593 static void
settimeoutpacket(int argc,char * argv[])594 settimeoutpacket(int argc, char *argv[])
595 {
596 int t;
597 char line[MAXLINE];
598
599 if (argc < 2) {
600 strcpy(line, "Packet timeout ");
601 printf("(value) ");
602 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
603 makeargv(line);
604 argc = margc;
605 argv = margv;
606 }
607 if (argc != 2) {
608 printf("usage: %s value\n", argv[0]);
609 return;
610 }
611 t = atoi(argv[1]);
612 if (t < 0) {
613 printf("%s: bad value\n", argv[1]);
614 return;
615 }
616
617 settimeouts(t, timeoutnetwork, maxtimeouts);
618 }
619
620 static void
settimeoutnetwork(int argc,char * argv[])621 settimeoutnetwork(int argc, char *argv[])
622 {
623 int t;
624 char line[MAXLINE];
625
626 if (argc < 2) {
627 strcpy(line, "Network timeout ");
628 printf("(value) ");
629 fgets(&line[strlen(line)], sizeof line - strlen(line), stdin);
630 makeargv(line);
631 argc = margc;
632 argv = margv;
633 }
634 if (argc != 2) {
635 printf("usage: %s value\n", argv[0]);
636 return;
637 }
638 t = atoi(argv[1]);
639 if (t < 0) {
640 printf("%s: bad value\n", argv[1]);
641 return;
642 }
643
644 settimeouts(timeoutpacket, t, maxtimeouts);
645 }
646
647 static void
showstatus(int argc __unused,char * argv[]__unused)648 showstatus(int argc __unused, char *argv[] __unused)
649 {
650
651 printf("Remote host: %s\n",
652 connected ? hostname : "none specified yet");
653 printf("RFC2347 Options support: %s\n",
654 options_rfc_enabled ? "enabled" : "disabled");
655 printf("Non-RFC defined options support: %s\n",
656 options_extra_enabled ? "enabled" : "disabled");
657 printf("Mode: %s\n", mode);
658 printf("Verbose: %s\n", verbose ? "on" : "off");
659 printf("Debug: %s\n", debug_show(debug));
660 printf("Artificial packetloss: %d in 100 packets\n",
661 packetdroppercentage);
662 printf("Segment size: %d bytes\n", segsize);
663 printf("Network timeout: %d seconds\n", timeoutpacket);
664 printf("Maximum network timeout: %d seconds\n", timeoutnetwork);
665 printf("Maximum timeouts: %d \n", maxtimeouts);
666 }
667
668 static void
intr(int dummy __unused)669 intr(int dummy __unused)
670 {
671
672 signal(SIGALRM, SIG_IGN);
673 alarm(0);
674 longjmp(toplevel, -1);
675 }
676
677 static char *
tail(char * filename)678 tail(char *filename)
679 {
680 char *s;
681
682 while (*filename) {
683 s = strrchr(filename, '/');
684 if (s == NULL)
685 break;
686 if (s[1])
687 return (s + 1);
688 *s = '\0';
689 }
690 return (filename);
691 }
692
693 static const char *
command_prompt(void)694 command_prompt(void)
695 {
696
697 return ("tftp> ");
698 }
699
700 /*
701 * Command parser.
702 */
703 static void
command(void)704 command(void)
705 {
706 HistEvent he;
707 struct cmd *c;
708 static EditLine *el;
709 static History *hist;
710 const char *bp;
711 char *cp;
712 int len, num, vrbose;
713 char line[MAXLINE];
714
715 vrbose = isatty(0);
716 if (vrbose) {
717 el = el_init("tftp", stdin, stdout, stderr);
718 hist = history_init();
719 history(hist, &he, H_SETSIZE, 100);
720 el_set(el, EL_HIST, history, hist);
721 el_set(el, EL_EDITOR, "emacs");
722 el_set(el, EL_PROMPT, command_prompt);
723 el_set(el, EL_SIGNAL, 1);
724 el_source(el, NULL);
725 }
726 for (;;) {
727 if (vrbose) {
728 if ((bp = el_gets(el, &num)) == NULL || num == 0)
729 exit(0);
730 len = (num > MAXLINE) ? MAXLINE : num;
731 memcpy(line, bp, len);
732 line[len] = '\0';
733 history(hist, &he, H_ENTER, bp);
734 } else {
735 line[0] = 0;
736 if (fgets(line, sizeof line , stdin) == NULL) {
737 if (feof(stdin)) {
738 exit(txrx_error);
739 } else {
740 continue;
741 }
742 }
743 }
744 if ((cp = strchr(line, '\n')))
745 *cp = '\0';
746 if (line[0] == 0)
747 continue;
748 makeargv(line);
749 if (margc == 0)
750 continue;
751 c = getcmd(margv[0]);
752 if (c == (struct cmd *)-1) {
753 printf("?Ambiguous command\n");
754 continue;
755 }
756 if (c == 0) {
757 printf("?Invalid command\n");
758 continue;
759 }
760 (*c->handler)(margc, margv);
761 }
762 }
763
764 static struct cmd *
getcmd(char * name)765 getcmd(char *name)
766 {
767 const char *p, *q;
768 struct cmd *c, *found;
769 int nmatches, longest;
770
771 longest = 0;
772 nmatches = 0;
773 found = 0;
774 for (c = cmdtab; (p = c->name) != NULL; c++) {
775 for (q = name; *q == *p++; q++)
776 if (*q == 0) /* exact match? */
777 return (c);
778 if (!*q) { /* the name was a prefix */
779 if (q - name > longest) {
780 longest = q - name;
781 nmatches = 1;
782 found = c;
783 } else if (q - name == longest)
784 nmatches++;
785 }
786 }
787 if (nmatches > 1)
788 return ((struct cmd *)-1);
789 return (found);
790 }
791
792 /*
793 * Slice a string up into argc/argv.
794 */
795 static void
makeargv(char * line)796 makeargv(char *line)
797 {
798 char *cp;
799 char **argp = margv;
800
801 margc = 0;
802 if ((cp = strchr(line, '\n')) != NULL)
803 *cp = '\0';
804 for (cp = line; margc < MAX_MARGV - 1 && *cp != '\0';) {
805 while (isspace(*cp))
806 cp++;
807 if (*cp == '\0')
808 break;
809 *argp++ = cp;
810 margc += 1;
811 while (*cp != '\0' && !isspace(*cp))
812 cp++;
813 if (*cp == '\0')
814 break;
815 *cp++ = '\0';
816 }
817 *argp++ = 0;
818 }
819
820 static void
quit(int argc __unused,char * argv[]__unused)821 quit(int argc __unused, char *argv[] __unused)
822 {
823
824 exit(txrx_error);
825 }
826
827 /*
828 * Help command.
829 */
830 static void
help(int argc,char * argv[])831 help(int argc, char *argv[])
832 {
833 struct cmd *c;
834
835 if (argc == 1) {
836 printf("Commands may be abbreviated. Commands are:\n\n");
837 for (c = cmdtab; c->name; c++)
838 printf("%-*s\t%s\n", (int)HELPINDENT, c->name, c->help);
839
840 printf("\n[-] : You shouldn't use these ones anymore.\n");
841 printf("[*] : RFC2347 options support required.\n");
842 printf("[**] : Non-standard RFC2347 option.\n");
843 return;
844 }
845 while (--argc > 0) {
846 char *arg;
847 arg = *++argv;
848 c = getcmd(arg);
849 if (c == (struct cmd *)-1)
850 printf("?Ambiguous help command: %s\n", arg);
851 else if (c == (struct cmd *)0)
852 printf("?Invalid help command: %s\n", arg);
853 else
854 printf("%s\n", c->help);
855 }
856 }
857
858 static void
setverbose(int argc __unused,char * argv[]__unused)859 setverbose(int argc __unused, char *argv[] __unused)
860 {
861
862 verbose = !verbose;
863 printf("Verbose mode %s.\n", verbose ? "on" : "off");
864 }
865
866 static void
setoptions(int argc,char * argv[])867 setoptions(int argc, char *argv[])
868 {
869
870 if (argc == 2) {
871 if (strcasecmp(argv[1], "enable") == 0 ||
872 strcasecmp(argv[1], "on") == 0) {
873 options_extra_enabled = 1;
874 options_rfc_enabled = 1;
875 }
876 if (strcasecmp(argv[1], "disable") == 0 ||
877 strcasecmp(argv[1], "off") == 0) {
878 options_extra_enabled = 0;
879 options_rfc_enabled = 0;
880 }
881 if (strcasecmp(argv[1], "extra") == 0)
882 options_extra_enabled = !options_extra_enabled;
883 }
884 printf("Support for RFC2347 style options are now %s.\n",
885 options_rfc_enabled ? "enabled" : "disabled");
886 printf("Support for non-RFC defined options are now %s.\n",
887 options_extra_enabled ? "enabled" : "disabled");
888
889 printf("\nThe following options are available:\n"
890 "\toptions on : enable support for RFC2347 style options\n"
891 "\toptions off : disable support for RFC2347 style options\n"
892 "\toptions extra : toggle support for non-RFC defined options\n"
893 );
894 }
895
896 static void
setrollover(int argc,char * argv[])897 setrollover(int argc, char *argv[])
898 {
899
900 if (argc == 2) {
901 if (strcasecmp(argv[1], "never") == 0 ||
902 strcasecmp(argv[1], "none") == 0) {
903 free(options[OPT_ROLLOVER].o_request);
904 options[OPT_ROLLOVER].o_request = NULL;
905 }
906 if (strcasecmp(argv[1], "1") == 0) {
907 free(options[OPT_ROLLOVER].o_request);
908 options[OPT_ROLLOVER].o_request = strdup("1");
909 }
910 if (strcasecmp(argv[1], "0") == 0) {
911 free(options[OPT_ROLLOVER].o_request);
912 options[OPT_ROLLOVER].o_request = strdup("0");
913 }
914 }
915 printf("Support for the rollover options is %s.\n",
916 options[OPT_ROLLOVER].o_request != NULL ? "enabled" : "disabled");
917 if (options[OPT_ROLLOVER].o_request != NULL)
918 printf("Block rollover will be to block %s.\n",
919 options[OPT_ROLLOVER].o_request);
920
921
922 printf("\nThe following rollover options are available:\n"
923 "\trollover 0 : rollover to block zero (default)\n"
924 "\trollover 1 : rollover to block one\n"
925 "\trollover never : do not support the rollover option\n"
926 "\trollover none : do not support the rollover option\n"
927 );
928 }
929
930 static void
setdebug(int argc,char * argv[])931 setdebug(int argc, char *argv[])
932 {
933 int i;
934
935 if (argc != 1) {
936 i = 1;
937 while (i < argc)
938 debug ^= debug_find(argv[i++]);
939 }
940 printf("The following debugging is enabled: %s\n", debug_show(debug));
941
942 printf("\nThe following debugs are available:\n");
943 i = 0;
944 while (debugs[i].name != NULL) {
945 printf("\t%s\t%s\n", debugs[i].name, debugs[i].desc);
946 i++;
947 }
948 }
949
950 static void
setblocksize(int argc,char * argv[])951 setblocksize(int argc, char *argv[])
952 {
953
954 if (!options_rfc_enabled)
955 printf("RFC2347 style options are not enabled "
956 "(but proceeding anyway)\n");
957
958 if (argc != 1) {
959 int size = atoi(argv[1]);
960 size_t max;
961 u_long maxdgram;
962
963 max = sizeof(maxdgram);
964 if (sysctlbyname("net.inet.udp.maxdgram",
965 &maxdgram, &max, NULL, 0) < 0) {
966 perror("sysctl: net.inet.udp.maxdgram");
967 return;
968 }
969
970 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) {
971 printf("Blocksize should be between %d and %d bytes.\n",
972 BLKSIZE_MIN, BLKSIZE_MAX);
973 return;
974 } else if (size > (int)maxdgram - 4) {
975 printf("Blocksize can't be bigger than %ld bytes due "
976 "to the net.inet.udp.maxdgram sysctl limitation.\n",
977 maxdgram - 4);
978 asprintf(&options[OPT_BLKSIZE].o_request,
979 "%ld", maxdgram - 4);
980 } else {
981 asprintf(&options[OPT_BLKSIZE].o_request, "%d", size);
982 }
983 }
984 printf("Blocksize is now %s bytes.\n", options[OPT_BLKSIZE].o_request);
985 }
986
987 static void
setblocksize2(int argc,char * argv[])988 setblocksize2(int argc, char *argv[])
989 {
990
991 if (!options_rfc_enabled || !options_extra_enabled)
992 printf(
993 "RFC2347 style or non-RFC defined options are not enabled "
994 "(but proceeding anyway)\n");
995
996 if (argc != 1) {
997 int size = atoi(argv[1]);
998 int i;
999 size_t max;
1000 u_long maxdgram;
1001
1002 int sizes[] = {
1003 8, 16, 32, 64, 128, 256, 512, 1024,
1004 2048, 4096, 8192, 16384, 32768, 0
1005 };
1006
1007 max = sizeof(maxdgram);
1008 if (sysctlbyname("net.inet.udp.maxdgram",
1009 &maxdgram, &max, NULL, 0) < 0) {
1010 perror("sysctl: net.inet.udp.maxdgram");
1011 return;
1012 }
1013
1014 for (i = 0; sizes[i] != 0; i++) {
1015 if (sizes[i] == size) break;
1016 }
1017 if (sizes[i] == 0) {
1018 printf("Blocksize2 should be a power of two between "
1019 "8 and 32768.\n");
1020 return;
1021 }
1022
1023 if (size < BLKSIZE_MIN || size > BLKSIZE_MAX) {
1024 printf("Blocksize2 should be between "
1025 "%d and %d bytes.\n", BLKSIZE_MIN, BLKSIZE_MAX);
1026 return;
1027 } else if (size > (int)maxdgram - 4) {
1028 printf("Blocksize2 can't be bigger than %ld bytes due "
1029 "to the net.inet.udp.maxdgram sysctl limitation.\n",
1030 maxdgram - 4);
1031 for (i = 0; sizes[i+1] != 0; i++) {
1032 if ((int)maxdgram < sizes[i+1]) break;
1033 }
1034 asprintf(&options[OPT_BLKSIZE2].o_request,
1035 "%d", sizes[i]);
1036 } else {
1037 asprintf(&options[OPT_BLKSIZE2].o_request, "%d", size);
1038 }
1039 }
1040 printf("Blocksize2 is now %s bytes.\n",
1041 options[OPT_BLKSIZE2].o_request);
1042 }
1043
1044 static void
setpacketdrop(int argc,char * argv[])1045 setpacketdrop(int argc, char *argv[])
1046 {
1047
1048 if (argc != 1)
1049 packetdroppercentage = atoi(argv[1]);
1050
1051 printf("Randomly %d in 100 packets will be dropped\n",
1052 packetdroppercentage);
1053 }
1054